Home / 209,782.72-289,499.36-114,289.12

Finding the Fourth Proportional to 209,782.72, 289,499.36 and 114,289.12

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Solution

The fourth proportional to 209,782.72, 289,499.36 and 114,289.12 is: 157,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,782.72 : 289,499.36 = 114,289.12 : x
  2. Step 2: Convert to fraction form
    209,782.72/289,499.36 = 114,289.12/x
  3. Step 3: Cross multiply
    209,782.72x = 289,499.36 × 114,289.12
  4. Step 4: Simplify right side
    209,782.72x = 33,086,627,094.96
  5. Step 5: Solve for x
    x = 33,086,627,094.96/209,782.72
  6. Step 6: Final answer
    x = 157,718.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.